PRL - Plenum

Plenum for grilles

This balancing plenum connects grilles to the ductwork, equalises the airflow by reducing the velocity - while air is spread evenly into the grille, thus ensuring proper function. It also has efficient sound attenuation, robust and air-tight construction, and wide range of available sizes.

The Halton PRL balancing plenum for grilles is made of galvanised steel and has a robust and airtight construction. Airflow rate measurement and adjustment module are available for supply application. The measurement and adjustment module is adjustable without opening the grille.

The balancing plenum has a spigot with integral gasket for airtight duct connection and a plug for ductwork pressure testing. The Halton PRL plenum has options for duct connection on the side, back or top. The balancing plenum attenuates duct noise. The sound attenuation material is either mineral wool or polyester fibre with a washable surface.

Halton PRL is connected to the duct with a spigot equipped with a gasket. The duct connection can be located on the side, above/below or behind the plenum. Due to the symmetrical structure of the Halton PRL, connections can be made in a number of different ways: by turning the plenum right or left, or by rotating, from above or below.

The telescopic collar of the plenum permits mounting into walls of thickness 90...150 mm. For installation with Halton EVA exhaust unit no telescopic collar is used (not included to delivery).

The recommended safety distance upstream of the plenum in supply installations is minimum 3D.

Detach the grille and the perforated plate of the telescopic collar. Detach the measurement and adjustment module by pulling gently from the casing (not from the control spindle or measurement tubes). Wipe the parts with a damp cloth, instead of immersing in water.

The measurement and adjustment module is remounted by pushing the body until it meets the stopper.

The sound attenuation material within the plenum can also be removed (the material is washable), to enable cleaning of the inner side of the plenum. The material is detached by releasing the retaining brackets, which are replaced after washing. Replace the grille after cleaning.

The Halton PRL balancing plenum for grilles is made of galvanised steel and has a robust and airtight construction. Airflow rate measurement and adjustment module are available for supply application. The measurement and adjustment module is adjustable without opening the grille.

The balancing plenum has a spigot with integral gasket for airtight duct connection and a plug for ductwork pressure testing. The Halton PRL plenum has options for duct connection on the side, back or top. The balancing plenum attenuates duct noise. The sound attenuation material is either mineral wool or polyester fibre with a washable surface.

Halton is passionate about indoor environments. We offer business-enhancing products, systems, and services for comfortable, energy-efficient, and safe environments to customers who value people's wellbeing. Halton is involved from target-setting to facility use and focuses on creating positive indoor environment experiences for people.